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Jake Bailey
29b4c6723f
Modify the Unix signal handler to redirect execution to a Go sigpanic function instead of printing an error and re-raising the signal. The C signal handler modifies the ucontext to make the faulting instruction appear to have called tinygo_sigpanic, which then calls runtimePanic with the appropriate message. Supported on all architectures TinyGo targets on Linux and Darwin: x86_64, i386, aarch64, ARM, and MIPS. Also registers SIGFPE, which was previously not handled at all.
28 lines
545 B
Go
28 lines
545 B
Go
package runtime
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const GOARCH = "mipsle"
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// The bitness of the CPU (e.g. 8, 32, 64).
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const TargetBits = 32
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const deferExtraRegs = 0
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const callInstSize = 8 // "jal someFunc" is 4 bytes, plus a MIPS delay slot
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const (
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linux_MAP_ANONYMOUS = 0x800
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linux_SIGBUS = 10
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linux_SIGFPE = 8
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linux_SIGILL = 4
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linux_SIGSEGV = 11
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)
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// It appears that MIPS has a maximum alignment of 8 bytes.
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func align(ptr uintptr) uintptr {
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return (ptr + 7) &^ 7
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}
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func getCurrentStackPointer() uintptr {
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return uintptr(stacksave())
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}
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